i mean, he has a parachute, right, but if he passes out, can that parachute still open because there is a risk of him passing out? >> yes, there is a rescue of him passing out. he could go into a flat spin and have an uncontrollable flat spin in the first moments when he jumps off, and he could become unconscious, but his parachute could be opened remotely from their mission control in new mexico, so that could happen if he becomes unconscious. some other risks here, i mean, his -- the integrity of his high pressure suit is key. that suit becomes compromiseed in any way, if it's breached, especially at those high altitudes, then his blood could boil. he could be exposed to extreme cold because it gets to about 70 degrees below zero fahrenheit at those heights. all sorts of potential dangers, especially randi, in the first minute or so of his free-fall. >> incredible bravery. you actually had a chance to speak with felix, right? does he acknowledge that he could get hurt or possibly even die? >> he certainly does. that's part of the -- all the calculations that both he and his team are making.